Car shakes when put in park

I have a high-mileage car with close to 300,000 miles on the odometer. The problem started occurring a couple of months ago. I was at the traffic light, and the car started to shake. This stopped happening for a while. However, this occurred again several days ago and after I opened the hood, I found the engine to be shaking badly. At that moment, the car was put in park. Two days ago, there was some smoking from under the hood. I had the coolant leaked out. I took it to a mechanic and he had the thermostat, oxygen sensor, fuel filter, radiator cap and the water pump replaced, and changed the
Experienced mechanics share their insights in answering this question :
You should start by checking for a failed head gasket. With the overheating and coolant loss you describe, followed by very rough running suggests one or more cylinders have lost compression, causing the engine to shake. It’s also worth having the motor mounts checked, given the high mileage on your vehicle. If you need a diagnosis, a certified technician from YourMechanic can come to your car’s location to inspect the shaking issue and pinpoint the problem.

How to Identify and Fix Common car Problems ?

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Worn out spark plugs are one of the most common causes of engine shaking. If your spark plugs are dirty or worn out they will be unable to fire properly and create the spark your engine needs to ignite the fuel. This causes your engine to misfire. Replacing your spark plugs is typically inexpensive.
If the rotor is warped or has a variation in thickness, you may find your vehicle shakes when braking, or the steering wheel could shake, or the brake pedal may pulsate. Have your brake system checked and, if a damaged rotor is the problem, the part can be replaced.
Potential causes of a vehicle shaking at idle include a loose gas cap, loose battery cables, a worn throttle sensor, a damaged engine mount, or bad spark plugs. Perform a general inspection of your engine bay to look for damage. If you can`t repair the problem yourself, take the vehicle to a mechanic.
Low automatic transmission fluid can cause shaking. If the shaking is accompanied by the check engine light, it`s time to visit a mechanic. Drivers of manual cars might discover their clutch master cylinder is the source of the shaking.
If vibration is felt at certain speeds, the tires may need to be balanced. If the tires are wearing unevenly and causing the car to vibrate, the driver may need a tire rotation. In some cases, the driver may need new tires to solve the problem of vibration.
The most likely reason that you feel vibrations through the brake pedal is because a brake rotor — the rotating disc that the brake pads are pressed against by the calipers to slow the wheel — is unevenly worn, or what some call “warped.” (It`s unlikely that a rotor could truly be warped from normal use as opposed to a …
Common Causes of a Transmission Shudder

When your vehicle starts to shake convulsively, it may seem like your transmission is significantly damaged and about to shut down completely. However, the primary cause of a shuddering transmission is simply contaminated transmission fluid.

If your spark plugs are dirty or worn, your vehicle will shake when you`re stopped. Dirty or worn plugs misfire because they cannot ignite the piston cylinder fuel properly. Thankfully, new plugs aren`t that expensive.
A stuck brake caliper can also cause brake vibration. The caliper is the device that the brake pads are attached to, and a caliper pushes the brake pads to take hold of the rotors when you apply the brakes. Calipers can get stuck and when they do, you`ll experience shaking or a powerful pull to one side or the other.
Brakes – If the shaking occurs most often when you`re braking, it`s likely that the brake components are responsible for the shaking. Brake rotors that have worn down or lost their round shape will hinder brake pads and calipers from a proper grip or cause skipping.
The most common reasons for your car to excessively vibrate are a problem with your tyres, wheels, brakes, steering, suspension, axle or engine.
Improperly functioning spark plugs cause an uneven burn of fuel in the engine, resulting in fluctuating RPMs and a louder noise. You might also experience increased vibrations of your vehicle while sitting idle or while traveling at low speeds. These vibrations originate from the engine and can shake the entire car.
1) Your pedal vibrated because the ABS (anti-lock braking system) was activated. If the pedal vibrations (pulsing and groaning noises, too) happened when you e-braked, chances are ABS was activated. ABS prevents your tyres from locking up, which could lead to an uncontrollable skid.
Worn Brake Pads

Brake pads that are past their prime are another cause of car shaking or shuddering. You`ll feel a vibration as the pads` wear indicator sounds off with a squeal. This warning device is a metal tab that signals (through metal-on-metal contact) it`s time to replace the brake pads.

The gearbox fluid acts as a lubricant, so if you sense vibrations in the shifter when changing gears, then a gearbox oil change may be needed.
Both fuel and air are necessary for combustion, so if either filter or both filters are clogged, your car`s engine isn`t getting the mix of air and fuel that it needs. This can cause the car to vibrate as you accelerate because the combustion can`t keep up.
Your car shaking on idle is a pretty common occurrence, especially when you are at a stoplight waiting to drive off. Your car`s transmission gears, rotating crankshaft, as well as other inner working components, can cause vibrations that will be felt in the cabin of the vehicle.
Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.
Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.
A vehicle that is operating normally should measure at about 1,000. When a vehicle`s RPMs fall below or are increasingly higher than normal, especially if the car vibrates when idle, something is not right.
Vibrometers can be used to measure vibrations on any part of a machine, but the recommendations of the relevant standards indicate above all the most sensitive places, such as bearing housings, because there the level of vibrations and amplitudes of forces emerging there are usually the highest.
The most common reason for a car to shake is related to tires. If the tires are out of balance then the steering wheel can shake. This shaking starts at around 50-55 miles per hour (mph). It gets worse around 60 mph but starts to get better at high speeds.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I pulled into a parking spot and put my car into park, when I lifted my foot from the brake the car continues forward.
ANSWER : The vehicle transmission did not get back to the park position due to the shift cable came off of the transmission shift linkage. You will need to have a mechanic like one from YourMechanic come to you and check the shift cable connection at the transmission to see if the shift cable bushing broke and let the cable end disengage from the shift linkage. The shift cable may need replaced if the cable end bushing is not available. I recommend a mechanic check the shift cable and replace cable or repair cable end as parts allow.

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I filled my car up with gas, drove about a block to get a newspaper, put it in park and it died before i ever got out of the car .
ANSWER : With a car that cranks but won’t start, there are a few things that need to be checked. But before I explain them, there is a common thing that happens with Nissan’s. Every once in awhile they will flood the cylinders with fuel and wash the oil film off the cylinder walls and rings. This will reduce compression enough that the car will not start. Fortunately, there is an easy fix for this problem. It is what is known as clear flooding.

Hold the gas pedal all the way to the floor while cranking the motor. It won’t start immediately and when it does it will not run very well at first. Feather the throttle to keep it running until the motor clears out the excess fuel and the motor begins to run smoothly. If after cranking the motor with the gas pedal held to the floor for at least

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I put the wrong key in my car and a few weeks later my car just shut down and it will not start I believe it’s the computer but…
ANSWER : Hi there. What had happened is the wrong key set the security to the vehicle. This is to prevent the vehicle from starting with the wrong keys. Try removing the battery cables (+) and (-) for 13 minutes. During that time, put the original key in the ignition and turn it on. Activate everything in the car even though there is no power. Then remove the key and hook up the battery cables. The computer should have reset and reset the security. If the security is still being tripped, then I recommend seeking out a professional, such as one from Your Mechanic, to help you

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Car won’t move. I can start the car but when I put the shifter in 1st, 2nd, 3rd, ect. The car will not move.
ANSWER : The transaxle is not engaging internally to the axle shafts inside the transaxle or you have one or both axle shafts disengaged from the transaxle. The fact that the speedometer moves when gear is engaged and clutch is released shows the speed sensor in the transaxle is getting turned.

You will need to have the vehicle raised and the axles inspected for broke or stripped shafts. If the axles do not have anything visually wrong with them then hold one wheel and try to turn the other wheel while transaxle is in gear, with engine off, to see if the wheels are locked together. When you spin one wheel the other wheel should turn in the opposite direction. If it does not then the problem is in the transaxle differential gears and the transaxle would need to be removed and disassembled to find the broken internal components.

If you need some assistance with this, consider YourMechanic, as one of our mobile technicians can come to your home or office to diagnose your acceleration issue and help make the necessary repairs to get you going again.

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Motor/ Glove Compartment area is intensely shaking when i put my air at a certain point. Car does not turn off or idle.
ANSWER : Hi there. If a vehicle has not been in operation for quite some time, several things can occur that may cause this type of symptom. When an engine shakes or vibrates, it’s typically due to one of three things. First, the engine or motor mounts are loose or faulty, the fuel system is dirty or clogged with excessive carbon deposits from fuel, ignition system components are misfiring or not working correctly. When you turn on the AC on your car, it causes the motor to work hard to power it; as you turn the AC up, more power is required by the engine to keep up with the AC system. If the fuel system is clogged with debris, it will run rougher than normal; and get worse when the AC is turned to max. I don’t think anything the shop did hurt your car, but it would make sense to have this checked out by a different mechanic; perhaps having one of our mobile mechanics come to your location and complete an engine is vibrating inspection is a good idea.

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My car is shaking – 2000 Ford Mustang
ANSWER : If the shaking is occurring with the car stationary, that would not involve the wheels or driveshaft, although it could implicate the torque converter. A shaking engine diagnostic would start with the motor mounts. If those are judged solid (there are tests), one should assess the mechanical condition of the engine by checking cylinder compression.

The reason for that is if cylinder compression varies too much, that variance alone can account for this symptom. If the cylinder compression is too low or varies too much from high reading cylinder to low reading cylinder, one would then try to rule out easily repairable items like a mispositioned timing belt or chain. Of course, if compression issues are traced to valve train problems, the heads have to be serviced.

Other potential causes of the vibration are a broken harmonic balancer, engine ignition timing being off, and flexplate and/or torque converter damage or imbalance. Prior to getting involved with diagnosing an imbalance in something as hidden as the torque converter, though, the engine should be put on a scope to determine if there is something going on in individual cylinder firing conditions that would account for the vibration. Varying power output from individual cylinders, due to possible fuel and ignition system problems, obviously will cause vibration: you could have a bad coil, plug, injector, and so forth. A scope makes that diagnostic easy.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the engine is shaking and suggest any necessary repairs.

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I was sitting in the drive thru when all of a sudden my ABS Light came on. It was flashing. I put my car in park and took it off
ANSWER : The ABS light can come on for a number of reasons, most likely having nothing to do with the vehicle being in park or drive. The ABS system relies on a number of sensors including wheel speed sensors, vehicle speed sensors, and the brake light switch for input. When the ABS control module senses wheel lock up using input from these sensors, it can actuate the ABS pump to pump the brakes up to 15 times per second. Most ABS systems use the brake light switch as the first input, telling the control module that you have your foot is on the brake pedal, so it’s time to monitor wheel speed, vehicle speed, etc. So even if the vehicle is in park, if the brake pedal is depressed, the ABS system is ready for action.

Most likely, the ABS light came on because the system has detected a faulty input from any of the sensors is uses or even the ABS pump itself. In all likelihood, the system would have detected a fault at that moment whether you were moving or parked. Have a certified technician check the ABS system for faults as soon as possible. With a fault stored in the ABS system, the anti-lock function may not work as intended, especially on slippery surfaces.

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car shakes when idle and accelerating
ANSWER : It is very possible that you have a valve cover gasket or spark plug tube seal leak on your vehicle. These type of leaks will allow oil to leak onto the spark plugs causing misfires. When the engine misfires due to oil getting on the spark plug, the engine oil will burn. Since oil and tires are both petroleum products, they will both smell similar when they are burning. I would recommend having an oil leak inspection performed by a qualified professional to determine if there is an oil leak. Consider YourMechanic as an Oil/Fluid leak inspection can be peformed at your home or office.

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